It is not only in the Hogwarts School of magic and magic that mysterious and terrible events occur. And not just Harry Potter. Percy Jackson, a twelve-year-old American schoolboy, almost falls victim to a math teacher. It is good that the pen given to him by Mr. Branner, a Latin teacher, turns into a real sword and strikes a mad mathematician. But Percy Jackson’s troubles don’t end there. On the coast, where they leave with their mother, they are attacked by the monster Minotaur . And Percy's friend at school, Grover, who unexpectedly came to the rescue, is not a boy, but a satirist. But the main adventures begin later, when he and Grover get to the Half-Blood Camp... Rick Riordan’s cycle of Percy Jackson has become one of the super bestsellers of recent years. Soon on the screens of the whole world should come a high-budget film, shot on the works of this cycle.